An aluminum nucleus has 13 protons and 14 neutrons. A copper nucleus has 29 protons and 34 neutrons. What is the force of repulsion between an aluminum nucleus and a copper nucleus when they are separated by 1.2 nm?

Question Details
Joe Cool drives to see his girlfriend who attends another college.
(a) The 144 km trip takes 2.0 h. What was the average speed for the trip?
..... km/h

(b) The return trip over the same route takes 3.0 h because of heavy traffic. What is the average speed for the return trip?
..... km/h

(c) What is the average speed for the entire trip?
.... km/h

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